Intussusception: Causes, Symptoms & Treatment Guide

Introduction

Intussusception is a serious medical condition that occurs when a part of the intestine slides or telescopes into an adjacent portion of the intestine, causing a blockage. This disorder is most common in infants and young children, but can also affect adults. Intussusception can lead to severe complications if not treated promptly, making early diagnosis and treatment crucial. In this comprehensive guide, we will discuss the causes, symptoms, diagnosis, and treatment options for intussusception.

Causes and Risk Factors

The exact cause of intussusception is not always clear, but several factors may contribute to its development. In children, the most common trigger is believed to be an infection, such as viral gastroenteritis or adenovirus [1]. Other potential causes include:

• Meckel’s diverticulum
• Intestinal polyps or tumors
• Inflammatory bowel disease (e.g., Crohn’s disease)
• Congenital abnormalities (e.g., intestinal malrotation)
• Postoperative complications

Symptoms

The symptoms of intussusception can vary depending on the age of the patient and the location of the obstruction. In infants and young children, common symptoms include:

• Sudden, severe abdominal pain that comes and goes
• Vomiting
• Lethargy or irritability
• Abdominal swelling or bloating
• “Currant jelly” stools (bloody mucus)

In adults, symptoms may be less specific and can include abdominal pain, nausea, vomiting, and constipation [2].

Diagnosis

Diagnosing intussusception involves a combination of clinical evaluation and imaging techniques. The diagnostic process may include:

• Physical examination to assess abdominal tenderness and the presence of a palpable mass
• Ultrasound, which is the primary imaging modality for diagnosing intussusception in children
• Abdominal X-rays to identify signs of bowel obstruction
• Computed tomography (CT) scans, particularly in adults or cases with unclear ultrasound findings

Treatment

Treatment for intussusception depends on the patient’s age, the severity of the condition, and the presence of complications. The primary goal is to reduce the intussusception and relieve the obstruction.

Non-surgical Treatment

In most cases, particularly in children, intussusception can be treated non-surgically using an air or barium enema. This procedure involves inserting air or a contrast material into the rectum to help push the telescoped portion of the intestine back into its normal position. The success rate of non-surgical reduction is high, ranging from 80-95% [3].

Surgical Treatment

Surgery may be necessary if non-surgical reduction is unsuccessful or if there are signs of complications, such as perforation or necrosis. The surgical procedure, called a laparotomy, involves making an incision in the abdomen to manually reduce the intussusception and assess the viability of the affected bowel segment. In some cases, the damaged portion of the intestine may need to be removed (resection) and the healthy ends reattached (anastomosis).

Complications

If left untreated or if treatment is delayed, intussusception can lead to serious complications, including:

• Bowel obstruction
• Intestinal ischemia and necrosis
• Perforation and peritonitis
• Sepsis
• Recurrent intussusception (in some cases)

Prevention

While there is no guaranteed way to prevent intussusception, some measures may help reduce the risk, especially in children:

• Ensuring proper hygiene to minimize the risk of viral infections
• Staying up-to-date with childhood vaccinations, particularly the rotavirus vaccine
• Maintaining a healthy diet and lifestyle to promote overall intestinal health

Prognosis

The prognosis for intussusception is generally good when diagnosed and treated promptly. Most children recover fully after successful reduction, either through non-surgical or surgical methods. However, the risk of recurrence is estimated to be around 5-10% [1]. In adults, the prognosis may be more guarded, particularly when intussusception is caused by an underlying condition such as a tumor.

Patient Resources

For more information and support, patients and their families can consult the following resources:

• American Academy of Pediatrics: Intussusception.aspx” target=”_blank”> Intussusception in Children
• National Institute of Diabetes and Digestive and Kidney Diseases: Intussusception
• Mayo Clinic: Intussusception